NOTES ON LEPIDOPTERA FROM THE PYRENEES. 153 



focus owing- to the curvature of the surface pictured, this happens, 

 however, to give it additional vahie. At places it shows the network 

 excellently, at others the tine grain of the shell reminding one of the 

 dotted structure of the egg of Cijclopides, and again, just outside the 

 ring of best surface focus, and where the thickness of the shell is in 

 focus, the tine interstitial lines, seen also in "skipper" and various other 

 eggs, marking the points where three cells meet. Mr. Clark has also 

 photographed the micropylar rosette (x250), showing that, round it, 

 the sculpturing is almost evanescent, although, a little way off, the 

 points (or lines) marking the angles of the cells appear. 



The larvae hatched shortly after I got home in August, and were 

 placed on Lotus comicidotns, which seemed to be quite satisfactory to 

 them. I took a description of the living larva on September 20th, 

 when they were full grown in the first instar, and later made a full 

 examination of mounted skins. 



Larva (fullgrown in first iustar). — The larva was very light 

 griseous at first, is now 4mm. long, a bright reddish-ochreous ; the 

 markings are in longitudinal stripes, from yellow to brownish in tint, 

 dorsal line dark, then a broad light stripe with darker middle, then a 

 broad darker stripe with median white line ; perhaps better stated as 

 two darker bands divided by a very distinct pale line ; there is a 

 broader pale marginal flange stripe, below this darker, divided from 

 the ventral region by a pale line, or rather the ventral region below 

 the marginal pale band, is divided into five equal parts by four pale 

 lines. The darker parts, especially ventrally, are really the more 

 transparent portions of the skin. The larva is certainly not long and 

 slender, nor is it short and stubby. The dimensions are much the 

 same throughout ; the incisions marked, but hardly making the seg- 

 ments beaded ; the head the same colour as the skin, with large black 

 eyeiuark ; it is still fully half the thickness of the larva in diameter. 

 The tubercles are minute black dots with very short hairs ; the anal 

 plate and plates on claspers fuscous; the prothoracic plate isof thecolour 

 of larva with a row of four shining brown bristles on the front margin. 

 I have not sufficient knowledge of Geometrid larvse in their first stage 

 to know which are family, which generic, and which specific, charac- 

 ters ; I can, therefore, only describe what I see, without attempting to 

 assign to each character its significance. 



The head, 0-4mm. in diameter, has a rough surface, due to a raised 

 pattern, more or less in a minute network, the lines of which are, 

 however, of vaiying thickness, and, in many places, appear to end by 

 trying to pass under a neighbouring strand. The lines radiate, or, 

 rather, the cells of the network are, in some degree, in lines, radiating 

 from the hairs. Of the hairs, one notes on either side one near the 

 middle line above clypeus, one close to the clypeus, about one-third 

 down it, two others at about equal distances apart in line with the last 

 towards the antenna', one at almost the centre of the half cranial 

 plate; there is another nearer the vertex, and one or two near the 

 antenna ; they are about 0-04mm. in length ; each has its definite 

 position. The clypeus has a smoother texture, and has a pair of hairs 

 about the middle, and another lower doAvn, and rather further apart. 

 The jaws have four strong sharp teeth. The anten-na has a broad 

 short basal joint, a thick large middle one, with some strong bristles, 

 one so short and thick that it might be regarded as a further joint. 



